Body Candy Solid 14k Yellow Gold 2mm (0.030 cttw) Genuine Diamond Left Nose Stud Screw 20 Gauge 1/4" Gauge size 20 gauge; .8 millimeters Length 1/4 inch; 6 millimeters Nose stud with 0.030 cttw natural diamond in a prong setting Solid 14k yellow gold nose ring with polished finish Nose screw designed for use in left nostril